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Quarterly Results (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013		Apr. 30, 2012
Quarterly Financial Information [Line Items]
Restructuring charges, net	$ 2,900	$ 3,682	$ 22,857	[1]	$ 929
[1] During fiscal 2013, the Company recovered $1.0 million from a legal settlement (related to premises) attributable to a previous restructuring action.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Number Topic 5

-Section P

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